WO2023193762A1 - Procédé et appareil de transmission de signal de référence de positionnement (prs), et terminal - Google Patents

Procédé et appareil de transmission de signal de référence de positionnement (prs), et terminal Download PDF

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Publication number
WO2023193762A1
WO2023193762A1 PCT/CN2023/086588 CN2023086588W WO2023193762A1 WO 2023193762 A1 WO2023193762 A1 WO 2023193762A1 CN 2023086588 W CN2023086588 W CN 2023086588W WO 2023193762 A1 WO2023193762 A1 WO 2023193762A1
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Prior art keywords
prs
pssch
symbol
information
bandwidth
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PCT/CN2023/086588
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English (en)
Chinese (zh)
Inventor
王园园
邬华明
彭淑燕
司晔
刘是枭
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维沃移动通信有限公司
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Publication of WO2023193762A1 publication Critical patent/WO2023193762A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present application belongs to the field of communication technology, and specifically relates to a transmission method, device and terminal for positioning reference signal PRS.
  • LTE Long Term Evolution
  • UE User Equipment
  • LTE sidelink communicates based on broadcast. Although it can be used to support basic security communications of vehicle to everything (V2X), it is not suitable for other more advanced V2X services.
  • the 5G New Radio (NR) system will support more advanced sidelink transmission designs, such as unicast, multicast or multicast, etc., thereby supporting more comprehensive service types.
  • NR V2X defines two resource allocation modes (mode), one is mode 1, which schedules resources for the base station; the other is mode 2, where the UE decides what resources to use for transmission.
  • the resource information may come from the base station's broadcast message or preconfigured information. If the UE works within the range of the base station and has a Radio Resource Control (RRC) connection with the base station, it can be mode1 and/or mode2; if the UE works within the range of the base station but has no RRC connection with the base station, it can only work in mode2 . If the UE is outside the base station range, it can only work in mode2 and perform V2X transmission based on preconfigured information.
  • RRC Radio Resource Control
  • the specific working method is as follows: 1) After the resource selection is triggered, the sending UE first determines the resource selection window. The lower boundary of the resource selection window is at the T1 time after the resource selection is triggered, and the upper boundary of the resource selection is at the T1 time after the trigger. T2 time, where T2 is the value selected by the UE implementation method within the packet delay budget (Packet Delay Budget, PDB) transmitted by its Transport Block (TB), and T2 is not earlier than T1. 2) The UE selects resources during resource selection Previously, it was necessary to determine the candidate resource set (candidate resource set) for resource selection, and compare the reference signal receiving power (RSRP) measured on the resources within the resource selection window with the corresponding RSRP threshold.
  • RSRP reference signal receiving power
  • the resource can be included in the candidate resource set. 3) After the resource set is determined, the UE randomly selects transmission resources from the candidate resource set. In addition, the UE can reserve transmission resources for subsequent transmissions during this transmission.
  • Embodiments of the present application provide a method, device, and terminal for transmitting a positioning reference signal PRS, which can solve the problem in related technologies that how to transmit side-link positioning reference signals in a V2X scenario is not defined.
  • a transmission method of positioning reference signal PRS including:
  • the first terminal maps the side link SL-PRS to the physical side link shared channel PSSCH resource according to the first mapping information and sends it; wherein the first mapping information includes at least one of the following:
  • SL-PRS occupies the symbol information of PSSCH resources
  • Time division multiplexing TDM method of SL-PRS and PSSCH is a method of SL-PRS and PSSCH.
  • a transmission method of positioning reference signal PRS including:
  • the second terminal measures the side link SL-PRS according to the first mapping information; wherein the first mapping information is used to indicate the mapping rule of SL-PRS to PSSCH resources; the first mapping information includes at least one of the following :
  • SL-PRS occupies the symbol information of PSSCH resources
  • Time division multiplexing TDM method of SL-PRS and PSSCH is a method of SL-PRS and PSSCH.
  • a transmission device for positioning reference signal PRS including:
  • a sending module configured to map the side link SL-PRS to the physical side link shared channel PSSCH resource according to the first mapping information and send it; wherein the first mapping information includes at least one of the following:
  • SL-PRS occupies the symbol information of PSSCH resources
  • Time division multiplexing TDM method of SL-PRS and PSSCH is a method of SL-PRS and PSSCH.
  • a transmission device for positioning reference signal PRS including:
  • a measurement module configured to measure the side link SL-PRS according to the first mapping information; wherein the first mapping information is used to indicate the mapping rule of SL-PRS to PSSCH resources; the first mapping information includes at least the following: One item:
  • SL-PRS occupies the symbol information of PSSCH resources
  • Time division multiplexing TDM method of SL-PRS and PSSCH is a method of SL-PRS and PSSCH.
  • a terminal in a fifth aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor, the following implementations are implemented: The steps of the method described in one aspect, or the steps of implementing the method described in the second aspect.
  • a terminal including a processor and a communication interface, wherein the processor is configured to map the side link SL-PRS to the physical side link shared channel PSSCH resource according to the first mapping information and send the ;
  • the first mapping information includes at least one of the following:
  • SL-PRS occupies the symbol information of PSSCH resources
  • Time division multiplexing TDM method of SL-PRS and PSSCH is a method of SL-PRS and PSSCH.
  • a terminal including a processor and a communication interface, wherein the processor is configured to measure the side link SL-PRS according to the first mapping information; wherein the first mapping information is used to indicate the SL -Mapping rules for mapping PRS to PSSCH resources; the first mapping information includes at least one of the following:
  • SL-PRS occupies the symbol information of PSSCH resources
  • Time division multiplexing TDM method of SL-PRS and PSSCH is a method of SL-PRS and PSSCH.
  • a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method are implemented as described in the first aspect. The steps of the method described in the second aspect.
  • a chip in a ninth aspect, includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the method described in the first aspect. , or implement the method described in the second aspect.
  • a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the method as described in the first aspect The steps of the method, or implementing the method as described in the second aspect.
  • the first terminal maps the SL-PRS to the PSSCH resource for transmission based on the determined first mapping information, and the corresponding second terminal measures the SL-PRS based on the first mapping information, which can satisfy the positioning requirements for resources. needs, and can avoid positioning interference on data signals.
  • Figure 1 shows a block diagram of a wireless communication system to which embodiments of the present application can be applied
  • FIG. 2 shows one of the step flow charts of the positioning reference signal PRS transmission method provided by the embodiment of the present application
  • Figure 3 shows an example of Figure 1 in which the bandwidth of the SL-PRS is the same as the bandwidth of the PSSCH resource in the positioning reference signal PRS transmission method provided by the embodiment of the present application;
  • Figure 4 shows the second example diagram in which the bandwidth of the SL-PRS is the same as the bandwidth of the PSSCH resource in the positioning reference signal PRS transmission method provided by the embodiment of the present application;
  • Figure 5 shows one of the example diagrams in which the bandwidth of the SL-PRS is different from the bandwidth of the PSSCH resource in the positioning reference signal PRS transmission method provided by the embodiment of the present application;
  • Figure 6 shows the second example diagram in which the bandwidth of the SL-PRS is different from the bandwidth of the PSSCH resource in the positioning reference signal PRS transmission method provided by the embodiment of the present application;
  • Figure 7 shows the third example diagram in which the bandwidth of the SL-PRS is different from the bandwidth of the PSSCH resource in the positioning reference signal PRS transmission method provided by the embodiment of the present application;
  • Figure 8 shows the fourth example diagram in which the bandwidth of the SL-PRS is different from the bandwidth of the PSSCH resource in the positioning reference signal PRS transmission method provided by the embodiment of the present application;
  • Figure 9 shows an example of mapping of SL-PRS and PSSCH resources in the embodiment of the present application.
  • Figure 10 shows an example of mapping of SL-PRS and PSSCH resources in the embodiment of the present application
  • Figure 11 shows an example of mapping of SL-PRS and PSSCH resources in the embodiment of the present application
  • Figure 12 shows an example of mapping of SL-PRS and PSSCH resources in the embodiment of the present application
  • Figure 13 shows an example of mapping of SL-PRS and PSSCH resources in the embodiment of the present application
  • Figure 14 shows an example of mapping of SL-PRS and PSSCH resources in the embodiment of the present application
  • Figure 15 shows an example of mapping of SL-PRS and PSSCH resources in the embodiment of the present application
  • Figure 16 shows an example of mapping of SL-PRS and PSSCH resources in the embodiment of the present application
  • Figure 17 shows an example diagram when the comb value of SL-PRS is equal to 1 in the embodiment of the present application
  • Figure 18 shows an example diagram of mapping of SL-PRS when the comb value of SL-PRS is equal to 2 in the embodiment of the present application;
  • Figure 19 shows an example diagram of mapping of SL-PRS when the comb value of SL-PRS is equal to 4 in the embodiment of the present application;
  • Figure 20 shows the second step flow chart of the positioning reference signal PRS transmission method provided by the embodiment of the present application.
  • Figure 21 shows one of the structural schematic diagrams of the PRS transmission device provided by the embodiment of the present application.
  • Figure 22 shows the second structural schematic diagram of the PRS transmission device provided by the embodiment of the present application.
  • Figure 23 shows one of the schematic structural diagrams of the terminal provided by the embodiment of the present application.
  • Figure 24 shows the second structural schematic diagram of the terminal provided by the embodiment of the present application.
  • first, second, etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and “second” are distinguished objects It is usually one type, and the number of objects is not limited.
  • the first object can be one or multiple.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the related objects are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced, LTE-A Long Term Evolution
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • NR New Radio
  • FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable.
  • the wireless communication system includes a terminal 11 and a network side device 12.
  • the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, or a super mobile personal computer.
  • Tablet Personal Computer Tablet Personal Computer
  • laptop computer laptop computer
  • PDA Personal Digital Assistant
  • PDA Personal Digital Assistant
  • UMPC ultra-mobile personal computer
  • UMPC mobile Internet device
  • MID mobile Internet device
  • augmented reality augmented reality, AR
  • VR virtual reality
  • robots wearable devices
  • Vehicle user equipment VUE
  • pedestrian terminal pedestrian terminal
  • PUE pedestrian terminal
  • smart home home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.
  • game consoles personal computers (personal computer, PC), teller machine or self-service machine and other terminal-side devices.
  • Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets) bracelets, smart anklets, etc.), smart wristbands, smart clothing, etc.
  • the network side equipment 12 may include access network equipment or core network equipment, where the access network equipment 12 may also be called wireless access network equipment, radio access network (Radio Access Network, RAN), radio access network function or Wireless access network unit.
  • the access network device 12 may include a base station, a Wireless Local Area Network (WLAN) access point or a Wireless Fidelity (WiFi) node, etc.
  • WLAN Wireless Local Area Network
  • WiFi Wireless Fidelity
  • the base station may be called a Node B, an Evolved Node B (eNB), Access point, Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home B node, home Evolved B node, Transmitting Receiving Point (TRP), location management function (LMF), Enhanced Serving Mobile Location Center (E-SMLC), network data analysis function (network data analytics function, NWDAF) or other appropriate terms in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiment of this application, only the NR system is used The base station in is introduced as an example, and the specific type of base station is not limited.
  • the positioning reference signal Positioning Reference Signal, PRS
  • PRS Positioning Reference Signal
  • the positioning signal or SL-PRS may be:
  • the SL-PRS signal may be an SL signal used for positioning
  • the SL-PRS signal may be a multiplex of an NR positioning signal, an SL signal in related technologies, or an enhancement, such as a channel state information reference signal (CSI Reference Signal, CSI-RS), a sidelink synchronization signal block (sidelink Synchronization Signal block (S-SSB), tracking reference signal (TRS) or demodulation reference signal (Demodulation Reference Signal, DMRS);
  • CSI Reference Signal CSI Reference Signal
  • S-SSB sidelink Synchronization Signal block
  • TRS tracking reference signal
  • DMRS demodulation reference signal
  • the SL-PRS signal may be an NR positioning signal specifically defined for positioning and extended to the sidelink.
  • the signal includes, but is not limited to, a gold code sequence, an m sequence, and a ZC sequence.
  • the SL-PRS signal may be a sidelink positioning signal specifically defined for positioning.
  • this embodiment of the present application also provides a method for transmitting a positioning reference signal PRS, which includes:
  • Step 201 The first terminal maps the side link SL-PRS to the Physical Sidelink Shared Channel (PSSCH) resource and sends it according to the first mapping information; wherein the first mapping information includes the following At least one:
  • SL-PRS occupies the symbol information of PSSCH resources
  • Time Division Multiplexing (TDM) method of SL-PRS and PSSCH is a Time Division Multiplexing (TDM) method of SL-PRS and PSSCH.
  • the PSSCH resources mentioned in the embodiments of this application are scheduled PSSCH resources.
  • the PSSCH resources are scheduled by scheduling the scheduling indication information of the PSSCH.
  • the scheduling instruction information includes at least one of the following:
  • the starting frequency domain position of the scheduled PSSCH resource
  • the method of scheduling PSSCH resources is: scheduling through scheduling indication information; for example, the scheduling indication information is sidelink control information (Sidelink Control Information, SCI), including 1st SCI or 2nd SCI.
  • the scheduled PSSCH resources may occupy 6-13 symbols (6-13 symbols of one SL slot).
  • the above-mentioned PRS transmission method is specifically a PRS transmission method between the first terminal and the second terminal, that is, the first terminal maps the SL-PRS to the scheduled PSSCH resources and sends it to the second terminal.
  • the first terminal may be a sending terminal, and the second terminal may be a receiving terminal; or the first terminal may be a scheduling terminal, and the second terminal may be a sending terminal; or the first terminal may be a scheduling terminal.
  • the second terminal can be a receiving terminal, which will not be listed here.
  • the first terminal and the second terminal need to have a consistent understanding of the way in which SL-PRS is mapped to the scheduled PSSCH resource, that is, the first terminal maps the SL-PRS to the scheduled PSSCH resource according to the first mapping information.
  • the second terminal can also determine the location of the SL-PRS on the scheduled PSSCH resource based on the first mapping information, thereby receiving and analyzing the PSSCH and SL-PRS on the PSSCH resource.
  • the second terminal serves as a receiving terminal and measures the SL-PRS according to the first mapping rule.
  • the second terminal serves as a receiving terminal and measures the SL-PRS according to the first mapping rule and the preconfiguration information of the SL PRS.
  • the second terminal serves as a receiving terminal and measures the SL-PRS according to the first mapping rule and PSSCH scheduling information.
  • the method further includes:
  • the first terminal determines whether to transmit the SL-PRS on the PSSCH resource according to a first method; wherein the first method includes at least one of the following:
  • An indication of the scheduling indication information for scheduling PSSCH is SCI, or the first SCI (1st SCI), or the second SCI (2nd SCI); optionally, the indication can be a 1-bit indication of the current scheduling Whether the PSSCH resource or the slot carrying SCI transmits the SL-PRS.
  • the scheduling indication information for scheduling PSSCH includes multiple PSSCH resources, 2 bits or 3 bits may optionally be used to indicate on which PSSCH resource the SL-PRS is transmitted.
  • the resource pool configuration information is determined by network configuration or network indication or terminal configuration or terminal indication or high-level indication.
  • the resource pool configuration information can be 1 bit to indicate whether the current resource pool is allowed to be multiplexed by SL-PRS; optionally, the resource pool configuration information includes dedicated resource information, which can be used for SL-PRS multiplexing. ;
  • the resource pool configuration information includes SL-PRS priority indication information that can be multiplexed by SL-PRS;
  • the resource pool configuration information includes symbol information that can be multiplexed by SL-PRS or Maximum resource ratio or maximum number of symbols.
  • the configuration granularity of the resource pool configuration information includes at least one of the following:
  • Each resource pool (resource pool);
  • QoS Quality of Service
  • CBR Channel Busy Ratio
  • Each channel occupancy ratio (Channel Occupancy Ratio, CR).
  • the above resource pool configuration information may be parameters configured for each resource pool, or parameters configured for each Qos, or parameters configured for each logical channel, or parameters configured for each logical channel group, Or parameters configured for each CBR, or parameters configured for each CR.
  • the resource pool configuration information may include multiple SL-PRS priority indication information multiplexed by SL-PRS, and each SL-PRS priority indication information is relative to a different Qos or a different logical channel.
  • the method further includes:
  • the first terminal determines the first mapping information according to a first rule and/or first information; wherein the first information includes at least one of the following:
  • PSCCH Physical Sidelink Control Channel
  • DMRS Demodulation Reference Signal
  • TDM configuration information of SL-PRS and PSSCH for example, TDM configuration information is used to indicate SL-PRS and PSSCH is slot-based TDM, or used to indicate that SL-PRS and PSSCH are symbol-based TDM;
  • the first information includes preconfiguration information of the SL-PRS, including at least one of the following: the number of symbols of the SL-PRS, the comb value, the SL-PRS mode and the starting symbol of the SL-PRS.
  • the first information includes preconfiguration information of the SL-PRS, including frequency domain information, such as at least one of the following: bandwidth of the SL-PRS, relationship between SL-PRS and PSSCH.
  • the SL-PRS mode may include multiple modes in the preconfiguration information, and the specific mode used to transmit SL-PRS may be determined based on the first rule or scheduling information (such as SCI).
  • the first rule is indicated by scheduling instruction information for scheduling PSSCH or resource pool configuration information, or the first rule is a predefined SL-PRS mapping rule.
  • the first rule includes a relationship between SL-PRS (pattern, number of symbols, comb, starting symbols) and the number of symbols of the PSCCH, or SL-PRS (pattern, number of symbols, comb, starting symbols). ) and the relationship between the symbol number of the PSSCH/symbol position; or the relationship between SL-PRS (pattern, symbol number, comb, starting symbol) and the DMRS.
  • the first terminal may determine the above-mentioned first mapping information only based on the first rule; it may also determine the above-mentioned first mapping information in combination with the first rule and the first information; there is no specific limitation here. .
  • the relationship between the bandwidth of the SL-PRS and the bandwidth of the PSSCH resource includes:
  • the bandwidth of SL-PRS is the same as the bandwidth of PSSCH resources;
  • the bandwidth of SL-PRS is different from the bandwidth of PSSCH resources.
  • the resource pool configuration information or scheduling indication signaling indicates that the bandwidth of the SL-PRS is the same as or different from the bandwidth of the PSSCH resource; for another example, the protocol predefines or indicates that the bandwidth of the SL-PRS is the same as or different from the bandwidth of the PSSCH resource.
  • the bandwidth of the SL-PRS and the bandwidth of the scheduled PSSCH resource are the same, which can be understood as: the size and position of the bandwidth are the same, for example, as shown in Figure 3 and Figure 4, where the first symbol is Automatic Gain Control (Automatic Gain Control). Gain Control (AGC), the last symbol is used for the measurement gap (gap), and the SCI is used for scheduling PSSCH resources; it can also be understood as: SL-PRS is transmitted within the frequency domain range of the PSSCH resource and shares the same frequency domain bandwidth with it.
  • AGC Automatic Gain Control
  • SL-PRS is frequency division multiplexed with the actual transmitted PSSCH, as shown in Figure 7 and Figure 8.
  • the scheduling indication information or the resource pool Configuration information is also used to indicate at least one of the following:
  • the change bandwidth of the bandwidth of the SL-PRS relative to the bandwidth of the PSSCH resource such as the increased bandwidth of the SL-PRS compared to the PSSCH;
  • Offset information of the starting frequency domain position of the SL-PRS relative to the starting frequency domain position of the PSSCH resource is offset.
  • the SCI indicates the bandwidth of the SL-PRS, or the SCI indicates the increased bandwidth of the SL-PR compared to the PSSCH.
  • the SCI is used to indicate the starting frequency domain position of the SL-PRS, or the SCI is used to indicate the starting frequency domain position of the SL-PRS offset compared to the PSSCH.
  • the protocol pre-defines or pre-agrees an optional SL-PRS bandwidth, there is no need to indicate the SL-PRS bandwidth during further scheduling; or if the protocol pre-defines or pre-agrees multiple optional SL-PRS bandwidths
  • the bandwidth of the selected SL-PRS (such as N types) needs to be indicated to specifically use one of the N types during further scheduling.
  • the first rule indicates the bandwidth of the N types of SL-PRS.
  • the first rule indicates the relationship between the SL-PRS bandwidth and the PSSCH bandwidth under different circumstances (such as different PSSCH bandwidths).
  • the first rule indicates how to determine the SL-PRS bandwidth according to the bandwidth of PSSCH.
  • the scheduling indication information only needs to indicate the starting frequency domain position or the ending frequency domain of the SL-PRS. Location.
  • the protocol predefines or pre-agrees on an optional starting frequency domain position of SL-PRS, or the relationship between the starting frequency domain position of SL-PRS and the starting frequency domain position of PSSCH/PSCCH,
  • the scheduling indication information only needs to indicate bandwidth-related information of the SL-PRS.
  • the scheduling indication information or the Resource pool configuration information is also used to indicate at least one of the following:
  • the SL-PRS occupies the bandwidth allocation information of PSSCH resources
  • the bandwidth of the SL-PRS changes relative to the bandwidth of the PSSCH resource.
  • the protocol pre-defines or pre-agrees an optional SL-PRS bandwidth
  • the bandwidth of SL-PRS (such as N types) needs to be indicated to specifically use one of the N types during further scheduling.
  • the first rule indicates the FDM mode of the SL-PRS and PSSCH, optionally, the SL-PRS ratio in FDM;
  • the first rule indicates the bandwidth of the N types of SL-PRS.
  • the first terminal maps the SL-PRS to the PSSCH resource and sends it, including:
  • the first terminal performs rate matching (rate matching) on the SL data channel or SL signal on the PSSCH resource. matching) or punching.
  • the method also includes:
  • the first terminal determines the gap between the SL-PRS and the SL channel according to predefinition or network configuration or terminal configuration.
  • the above-mentioned SL channel includes: at least one of SL PSSCH, SL PSFCH and SL PSCCH.
  • the gap between the protocol predefined or network configuration or terminal configuration SL-PRS and SL channel; during inband (in-band) transmission, the gap can ensure small interference.
  • the symbol information of the PSSCH resources occupied by the SL-PRS includes at least one of the following:
  • a pattern of SL-PRS which is used to indicate at least one of the symbol number, symbol position, starting symbol of the PSSCH resource occupied by SL-PRS, and the comb value of the SL-PRS. of two.
  • the first rule further includes specifying an optional SL-PRS mode,
  • the first rule further includes specifying symbol positions of PSSCH resources occupied by optional SL-PRS.
  • one symbol location indication is selected for multiple symbol locations.
  • the first rule further includes specifying symbol positions of PSSCH resources occupied by multiple SL-PRSs.
  • the symbol positions of the PSSCH resources occupied by the multiple SL-PRS are based on the first scheduling information (SCI indicates one), or the first rule indicates the relationship between the SL-PRS symbol positions and PSSCH information or DMRS, Based on the determined PSSCH information or DMRS, the symbol position of SL-PRS can be calculated.
  • At least one of the symbol position, symbol number, starting symbol and comb value of the SL-PRS of the PSSCH resource occupied by the SL-PRS is related to the second information; wherein the second information includes At least one of the following:
  • the symbol length of the physical side link control channel PSCCH such as ⁇ 2, 3 ⁇ ;
  • the starting symbol of PSSCH such as ⁇ 2, 4, 5 ⁇ ;
  • PSSCH symbol length such as ⁇ 6, 7, 8, 9, 10, 11, 12, 13 ⁇ ;
  • the pattern of the demodulation reference signal DMRS such as the number of symbols occupied by DMRS and the symbol position of DMRS;
  • Whether the time slot in which the SL-PRS is located contains physical side link feedback channel PSFCH resources.
  • the pattern of SL-PRS can be indicated jointly with the pattern of DMRS;
  • the protocol indicates or pre-agrees the corresponding relationship between the pattern of SL-PRS and the pattern of DMRS.
  • the starting symbol of the scheduled PSSCH resource occupied by the SL-PRS is any one of the following:
  • the starting symbol of PSSCH for example, the starting symbol of SL-PRS can be located at the beginning of PSSCH only when the starting symbol of PSSCH is different from the starting symbol of PSCCH, that is, when the starting symbol of PSSCH is not equal to 2 symbol;
  • the starting symbol of PSCCH is the same as the starting symbol of PSSCH, that is, the starting symbol of PSSCH is 2, then the starting symbol of SL-PRS is located at the starting symbol of PSSCH + N1'; it can also be understood as, the starting symbol of SL-PRS The starting symbol is located at the last symbol position of PSCCH +N1;
  • the starting symbol of PSCCH is different from the starting symbol of PSSCH, that is, the starting symbol of PSSCH is 4 or 5, then the starting symbol of SL-PRS is located at PSSCH starting symbol + N1"; it can also be understood as, SL -The starting symbol of PRS is located at the last symbol position of PSCCH +N1; among them, the value of N1' is different from the value of N1′′.
  • the N2th symbol of the PSSCH resource optionally, the value of N2 can be determined according to the symbol length of the PSSCH, for example, for the symbol length of the PSSCH ⁇ 6, 7, 8, 9, 10, 11, 12, 13 ⁇ , the values of N2 may not be exactly the same, or exactly the same, or completely different;
  • N3th symbol after the last symbol of PSCCH optionally, the specific value of N3 is determined according to whether the last symbol of PSCCH is symbol 3 or symbol 4, which can be different;
  • N4 is equal to 1.
  • the DMRS symbol position may be the last symbol position or the middle symbol position. For example, in the case of two DMRS symbols, the DMRS symbol position is the corresponding last symbol position; for another example, in the case of more than two DMRS symbols, the DMRS symbol position is the corresponding second DMRS symbol position;
  • the N5th symbol before the symbol position of the last DMRS can also be understood as the symbol position of SL-PRS occupies the N5 symbols before the symbol position of the last DMRS; for example, in the case of more than 2 DMRS symbols , cancel the transmission of the last DMRS symbol, then the symbol position of SL-PRS is ⁇ DMRS Ending position -N5 ⁇ DMRS Ending position ⁇ ; for another example, if there are more than 2 DMRS symbols, the last DMRS symbol is not occupied for transmission, then The symbol positions of SL-PRS are ⁇ DMRS Ending position -N5 ⁇ DMRS Ending position -1 ⁇ .
  • SL-PRS in the case where the symbol position or the starting symbol position of the SL-PRS determined by the first terminal according to any one of 1)-6) above overlaps with the DMRS symbol position, Then SL-PRS is transmitted on the symbols after DMRS. In one case, the starting symbol of SL-PRS is transmitted on the first symbol after DMRS.
  • the starting symbol of the scheduled PSSCH resource occupied by the SL-PRS is: 5
  • an optional symbol related to the mode of DMRS and the number of symbols occupied by the PSSCH is: 5
  • the symbol position of the SL-PRS related to the DMRS pattern is at least one of the following:
  • the optional SL-PRS symbol position is at least one of the following or at least N (N is the symbol length of SL-PRS): ⁇ 4,6,7,8,9 ⁇ ;
  • the optional SL-PRS symbol position is at least one of the following or at least N (N is the symbol length of SL-PRS): ⁇ [3],4,6,7,8,9 ⁇ ;
  • the optional SL-PRS symbol position is at least one of the following or at least N (N is the symbol length of SL-PRS):
  • ⁇ 4,5,6,7,9,10,11,12 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 3,8 ⁇ ;
  • ⁇ 5,6,8,9,10,11,12 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 4,8 ⁇ ;
  • ⁇ 5,6,7,9,10,11,12 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 1,4,7 ⁇ ;
  • the optional SL-PRS symbol position is at least one of the following or at least N (N is the symbol length of SL-PRS):
  • ⁇ 4,5,6,7,8,9,11,12 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 3,10 ⁇ ;
  • ⁇ 5,6,7,8,9,11,12 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 4,10 ⁇ ;
  • ⁇ [3],4,6,7,8,10,11,12 ⁇ , corresponding to DMRS is 3 symbols, symbol position ⁇ 1,5,9 ⁇ ;
  • ⁇ 5,6,8,9,11,12 ⁇ , corresponding to DMRS is 4 symbols, symbol position ⁇ 1,4,7,10 ⁇ ;
  • the optional SL-PRS symbol position is at least one of the following or at least N (N is the symbol length of SL-PRS):
  • ⁇ 4,5,6,7,8,9,11,12 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 3,10 ⁇ ;
  • ⁇ 4,5,7,8,9,10,12 ⁇ , corresponding to DMRS is 3 symbols, symbol position ⁇ 1,6,11 ⁇ ;
  • ⁇ 3,5,6,8,9,11,12 ⁇ , corresponding to DMRS is 4 symbols, symbol position ⁇ 1,4,7,10 ⁇ ;
  • ⁇ 5,6,8,9,11,12 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 4, 10 ⁇ .
  • the starting symbol position of the SL-PRS related to the DMRS pattern is at least one of the following: ⁇ 4, 5, 6, 7, 8, 9, 10, 11 ⁇ ; further, The above SL-PRS starting symbol position is related according to the following information:
  • ⁇ 4,9 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 3,8 ⁇ ;
  • ⁇ 5,9 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 4,8 ⁇ ;
  • ⁇ 5,9 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 1,4,7 ⁇ ;
  • ⁇ 4,11 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 3,10 ⁇ ;
  • ⁇ 5,11 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 4,10 ⁇ ;
  • ⁇ 6,10 ⁇ corresponding to DMRS is 3 symbols, symbol position ⁇ 1,5,9 ⁇ ;
  • ⁇ 5,11 ⁇ , corresponding to DMRS is 4 symbols, symbol position ⁇ 1,4,7,10 ⁇ ;
  • ⁇ 4,11 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 3,10 ⁇ ;
  • ⁇ 4,7 ⁇ , corresponding to DMRS is 3 symbols, symbol position ⁇ 1,6,11 ⁇ ;
  • ⁇ 5,8 ⁇ , corresponding to DMRS is 4 symbols, symbol position ⁇ 1,4,7,10 ⁇ ;
  • the corresponding DMRS is 2 symbols, and the symbol position is ⁇ 4,10 ⁇ .
  • the symbol length of the scheduled PSSCH resource occupied by the SL-PRS (for example, the symbol length is 2 or 4) is related to third information, and the third information includes at least one of the following:
  • the time slot in which the SL-PRS is located contains PSFCH resources; in one case, if PSFCH resources are included, the number of optional SL-PRS symbols is L3 (such as: 2); in another case, When PSFCH resources are not included, the number of optional SL-PRS symbols can be larger; therefore, the embodiment of the present application can define the number of symbols suitable for PSFCH or without PSFCH respectively;
  • the symbol length associated with the DMRS pattern is at least one of the following:
  • PSSCH ⁇ S1 (such as ⁇ 8,9 ⁇ ) symbols
  • the number of optional SL-PRS symbols is: ⁇ 2,4 ⁇
  • the number of optional SL-PRS symbols is: ⁇ 2, 4 ⁇ .
  • Figures 9 and 10 are partial examples where the number of symbols of the SL-PRS is 4.
  • the graphics can be extended in combination with the optional symbol positions of the SL-PRS in the above embodiment and applied to any symbol. Location situation.
  • Figures 11 to 16 are partial examples where the number of symbols of the SL-PRS is 2.
  • the graphics can be extended in combination with the optional symbol positions of the SL-PRS in the above embodiment and applied to any symbol. Location situation.
  • the method further includes:
  • the first terminal determines the SL-PRS mode according to the corresponding relationship between the DMRS mode and the SL-PRS mode;
  • the first terminal determines the SL-PRS mode according to the DMRS mode or fourth information of the PSSCH;
  • the first terminal determines the SL-PRS mode based on the corresponding relationship between the DMRS mode and the SL-PRS mode and the DMRS mode of the PSSCH;
  • the fourth information includes at least one of the following:
  • the symbol length of PSSCH is ⁇ 6,7,8,9,10,11,12,13 ⁇ ;
  • Whether the time slot in which the SL-PRS is located includes PSFCH resources.
  • one or more DMRS patterns are associated with SL-PRS, and the SL-PRS is determined according to the indicated DMRS pattern and the SL-PRS associated with the DMRS pattern.
  • one or more DMRS patterns are associated with SL-PRS, and the scheduling information or resource pool configuration information includes part of the SL-PRS information (ie, the fourth information), determine the SL- PRS.
  • the SL-PRS information includes at least one of the following: the number of symbols of the SL-PRS, the comb value, the SL-PRS mode and the starting symbol of the SL-PRS.
  • the SL-PRS information includes frequency domain information, such as at least one of the following: the bandwidth of the SL-PRS, the relationship between the SL-PRS and the PSSCH.
  • the method further includes:
  • the first terminal determines the SL-PRS mode based on whether the time slot in which the SL-PRS is located includes PSFCH resources and fifth information; wherein the fifth information includes at least one of the following:
  • the symbol length of PSSCH is ⁇ 6,7,8,9,10,11,12,13 ⁇ ;
  • At least two SL-PRS predefined methods or patterns are included, that is, one type of SL-PRS with PSFCH resources, and another type of SL-PRS without PSFCH resources.
  • the comb value of the SL-PRS is related to sixth information, and the sixth information includes at least one of the following:
  • the comb value is equal to the number of symbols of the SL-PRS; in another case, the comb value is the common divisor of the number of symbols of the SL-PRS.
  • the SL-PRS is partial stagger.
  • whether the UE reporting capability supports partial stagger is the comb value is the common divisor of the number of symbols of the SL-PRS.
  • Figure 17 shows an example diagram when the comb value is equal to 1.
  • the diagram can be extended in combination with the optional symbol positions of SL-PRS in the above embodiment and applied to any symbol position situation. .
  • Figure 18 shows an example map of SL-PRS mapping when the comb value is equal to 2.
  • the triangles and diamonds in the optional map 18 respectively represent the mapping of different SL-PRS. It can be understood that one UE maps the SL-PRS in a triangle position, and the other UE occupies a diamond position and maps the SL-PRS. It can also be understood that a UE maps different SL-PRS to triangle or diamond positions. That is, multiple SL-PRS are mapped to one symbol, using different resource element (Resource Element, RE) offsets.
  • RE resource element
  • Figure 19 shows an example of SL-PRS mapping when the comb value is equal to 4.
  • the optional map The circles, hearts, pentagrams, and diamonds in 19 represent the mapping of different SL-PRS respectively.
  • the TDM mode of SL-PRS and PSSCH includes any of the following:
  • Slot-level TDM indicates a TDM mode by transmitting at least a time slot of SL-PRS or a time slot of PSSCH.
  • the first terminal determines whether to support symbol-level TDM or slot-level TDM according to signaling or capabilities.
  • the symbol position of the actually transmitted PSSCH is different from the symbol position of SL-PRS, that is, it can be understood as symbol-level TDM.
  • the PSSCH is located before the SL-PRS transmitted symbol, that is, the actual transmitted 2nd SCI and/or PSSCH is located before the SL-PRS transmission.
  • the first terminal determines the first mapping information based on the first information; including determining the first mapping information based on the scheduling indication information and the preconfigured first information. For example, the first terminal determines the bandwidth and time slot position of the SL-PRS according to the SCI, and determines the SL-PRS mode or SL-PRS symbol information according to the preconfigured first information, thereby determining the specific mapping of SL-PRS to PSSCH. .
  • the first terminal determines the first mapping information only based on the scheduling indication information. For example, the first terminal determines the bandwidth, time slot position, SL-PRS mode or SL-PRS symbol information of the SL-PRS according to the SCI, thereby determining the specific mapping of the SL-PRS to the PSSCH.
  • the first terminal maps the SL-PRS to the scheduled PSSCH resource for transmission according to the determined first mapping information, and the corresponding second terminal measures the SL-PRS according to the first mapping information, that is, It can meet the resource requirements of positioning and avoid the interference of positioning on data signals.
  • this embodiment of the present application also provides a method for transmitting a positioning reference signal PRS, which includes:
  • Step 1501 The second terminal measures the side link SL-PRS according to the first mapping information; wherein the first mapping information is used to indicate the mapping rule of SL-PRS to PSSCH resources; the first mapping information includes the following At least one:
  • SL-PRS occupies the symbol information of PSSCH resources
  • Time division multiplexing TDM method of SL-PRS and PSSCH is a method of SL-PRS and PSSCH.
  • the PSSCH resources mentioned in the embodiments of this application are scheduled PSSCH resources.
  • the PSSCH resources are scheduled by scheduling the scheduling indication information of the PSSCH.
  • the scheduling instruction information includes at least one of the following:
  • the starting frequency domain position of the scheduled PSSCH resource
  • the method of scheduling PSSCH resources is: scheduling through scheduling indication information; for example
  • the scheduling instruction information is sidelink control information (SCI), including 1st SCI or 2nd SCI.
  • SCI sidelink control information
  • the scheduled PSSCH resources may occupy 6-13 symbols (6-13 symbols of one SL slot).
  • step 1501 includes:
  • the second terminal measures the SL-PRS according to the first mapping information and the scheduling indication information used to schedule the PSSCH;
  • the second terminal measures the SL-PRS according to the first mapping information and the preconfiguration information of the SL-PRS.
  • the above-mentioned PRS transmission method is specifically a PRS transmission method between the first terminal and the second terminal, that is, the first terminal maps the SL-PRS to the scheduled PSSCH resources and sends it to the second terminal.
  • the first terminal may be a sending terminal, and the second terminal may be a receiving terminal; or the first terminal may be a scheduling terminal, and the second terminal may be a sending terminal; or the first terminal may be a scheduling terminal.
  • the second terminal can be a receiving terminal, which will not be listed here.
  • the first terminal and the second terminal need to have a consistent understanding of the way in which SL-PRS is mapped to the scheduled PSSCH resource, that is, the first terminal maps the SL-PRS to the scheduled PSSCH resource according to the first mapping information.
  • the second terminal can also determine the location of the SL-PRS on the scheduled PSSCH resource based on the first mapping information, thereby receiving and analyzing the PSSCH and SL-PRS on the PSSCH resource.
  • the second terminal serves as a receiving terminal and measures the SL-PRS according to the first mapping rule.
  • the second terminal serves as a receiving terminal and measures the SL-PRS according to the first mapping rule and the preconfiguration information of the SL PRS.
  • the second terminal serves as a receiving terminal and measures the SL-PRS according to the first mapping rule and PSSCH scheduling information.
  • the method further includes:
  • the second terminal determines whether to transmit the SL-PRS on the PSSCH resource according to a first method; wherein the first method includes at least one of the following:
  • An indication of the scheduling indication information for scheduling PSSCH for example, the scheduling indication for scheduling PSSCH is SCI, or 1st SCI, or 2nd SCI; optionally, the indication can be 1 bit indicating whether the currently scheduled PSSCH resource or the slot carrying SCI is transmitted
  • the SL-PRS when the scheduling indication information for scheduling PSSCH includes multiple PSSCH resources, 2 bits or 3 bits may optionally be used to indicate on which PSSCH resource the SL-PRS is transmitted.
  • the resource pool configuration information is determined by network configuration or network indication or terminal configuration or terminal indication or high-level indication.
  • the resource pool configuration information can be 1 bit to indicate whether the current resource pool is allowed to be multiplexed by SL-PRS; optionally, the resource pool configuration information includes dedicated resource information, which can be used for SL-PRS multiplexing. ;
  • the resource pool configuration information includes SL-PRS priority indication information that can be multiplexed by SL-PRS;
  • the resource pool configuration information includes symbol information that can be multiplexed by SL-PRS or Maximum resource ratio or maximum number of symbols.
  • the configuration granularity of the resource pool configuration information includes at least one of the following:
  • Each resource pool (resource pool);
  • Each channel occupancy rate CR Each channel occupancy rate CR.
  • the above resource pool configuration information may be parameters configured for each resource pool, or parameters configured for each Qos, or parameters configured for each logical channel, or parameters configured for each logical channel group, Or parameters configured for each CBR, or parameters configured for each CR.
  • the resource pool configuration information may include multiple SL-PRS priority indication information multiplexed by SL-PRS, and each SL-PRS priority indication information is relative to a different Qos or a different logical channel.
  • the method further includes:
  • the second terminal determines the first mapping information according to the first rule and/or first information; wherein the first information includes at least one of the following:
  • TDM configuration information of SL-PRS and PSSCH for example, the TDM configuration information is used to indicate that SL-PRS and PSSCH are slot-based TDM, or to indicate that SL-PRS and PSSCH are symbol-based TDM;
  • the first rule is indicated by scheduling instruction information for scheduling PSSCH or resource pool configuration information, or the first rule is a predefined SL-PRS mapping rule.
  • the first rule includes a relationship between SL-PRS (pattern, number of symbols, comb, starting symbols) and the number of symbols of the PSCCH, or SL-PRS (pattern, number of symbols, comb, starting symbols). ) and the relationship between the symbol number of the PSSCH/symbol position; or the relationship between SL-PRS (pattern, symbol number, comb, starting symbol) and the DMRS.
  • the first terminal may determine the above-mentioned first mapping information only based on the first rule;
  • the first mapping information may also be determined in combination with the first rule and the first information; there is no specific limitation here.
  • the relationship between the bandwidth of the SL-PRS and the bandwidth of the PSSCH resource includes:
  • the bandwidth of SL-PRS is the same as the bandwidth of PSSCH resources;
  • the bandwidth of SL-PRS is different from the bandwidth of PSSCH resources.
  • the resource pool configuration information or scheduling indication signaling indicates that the bandwidth of the SL-PRS is the same as or different from the bandwidth of the PSSCH resource; for another example, the protocol predefines or indicates that the bandwidth of the SL-PRS is the same as or different from the bandwidth of the PSSCH resource.
  • the bandwidth of the SL-PRS and the bandwidth of the scheduled PSSCH resource can be understood as: the size and position of the bandwidth are the same, for example, as shown in Figure 3 and Figure 4, where the first symbol is the automatic gain control AGC, The last symbol is used for GAP, and SCI is used for scheduling PSSCH resources; it can also be understood as: SL-PRS is transmitted within the frequency domain range of PSSCH resources and shares the same frequency domain bandwidth with them.
  • SL-PRS is frequency division multiplexed with the actual transmitted PSSCH, as shown in Figure 7 and Figure 8.
  • the scheduling indication information or the resource pool Configuration information is also used to indicate at least one of the following:
  • the change bandwidth of the bandwidth of the SL-PRS relative to the bandwidth of the PSSCH resource such as the increased bandwidth of the SL-PRS compared to the PSSCH;
  • Offset information of the starting frequency domain position of the SL-PRS relative to the starting frequency domain position of the PSSCH resource is offset.
  • the SCI indicates the bandwidth of the SL-PRS, or the SCI indicates the increased bandwidth of the SL-PR compared to the PSSCH.
  • the SCI is used to indicate the starting frequency domain position of the SL-PRS, or the SCI is used to indicate the starting frequency domain position of the SL-PRS offset compared to the PSSCH.
  • the protocol pre-defines or pre-agrees an optional SL-PRS bandwidth, there is no need to indicate the SL-PRS bandwidth during further scheduling; or if the protocol pre-defines or pre-agrees multiple optional SL-PRS bandwidths
  • the bandwidth of the selected SL-PRS (such as N types) needs to be indicated to specifically use one of the N types during further scheduling.
  • the first rule indicates the bandwidth of the N types of SL-PRS.
  • the first rule indicates the relationship between the SL-PRS bandwidth and the PSSCH bandwidth under different circumstances (such as different PSSCH bandwidths).
  • the first rule indicates how to determine the SL-PRS bandwidth according to the bandwidth of PSSCH.
  • the scheduling indication information or the resource pool configuration information is also used to indicate at least one of the following:
  • the SL-PRS occupies the bandwidth allocation information of PSSCH resources
  • the bandwidth of the SL-PRS changes relative to the bandwidth of the PSSCH resource.
  • the protocol pre-defines or pre-agrees an optional SL-PRS bandwidth
  • the bandwidth of SL-PRS (such as N types) needs to be indicated to specifically use one of the N types during further scheduling.
  • the first rule indicates the FDM mode of the SL-PRS and PSSCH, optionally, the SL-PRS ratio in FDM;
  • the first rule indicates the bandwidth of the N types of SL-PRS.
  • the symbol information of the PSSCH resources occupied by the SL-PRS includes at least one of the following:
  • a mode of SL-PRS is used to indicate at least two of the symbol number, symbol position, starting symbol, and comb value of the SL-PRS of the PSSCH resource occupied by the SL-PRS.
  • the first rule further includes specifying an optional SL-PRS mode,
  • the first rule further includes specifying symbol positions of PSSCH resources occupied by optional SL-PRS.
  • one symbol location indication is selected for multiple symbol locations.
  • the first rule further includes specifying symbol positions of PSSCH resources occupied by multiple SL-PRSs.
  • the symbol positions of the PSSCH resources occupied by the multiple SL-PRS are based on the first scheduling information (SCI indicates one), or the first rule indicates the relationship between the SL-PRS symbol positions and PSSCH information or DMRS, Based on the determined PSSCH information or DMRS, the symbol position of SL-PRS can be calculated.
  • At least one of the symbol position, symbol number, starting symbol and comb value of the SL-PRS of the PSSCH resource occupied by the SL-PRS is related to the second information; wherein the second information includes At least one of the following:
  • the symbol length of the physical side link control channel PSCCH such as ⁇ 2, 3 ⁇ ;
  • the starting symbol of PSSCH such as ⁇ 2, 4, 5 ⁇ ;
  • PSSCH symbol length such as ⁇ 6, 7, 8, 9, 10, 11, 12, 13 ⁇ ;
  • the pattern of the demodulation reference signal DMRS such as the number of symbols occupied by DMRS and the symbol position of DMRS;
  • Whether the time slot in which the SL-PRS is located contains physical side link feedback channel PSFCH resources.
  • the pattern of SL-PRS can be indicated jointly with the pattern of DMRS;
  • the protocol indicates or pre-agrees the pattern of SL-PRS and the pattern of DMRS. corresponding relationship.
  • the starting symbol of the scheduled PSSCH resource occupied by the SL-PRS is any one of the following:
  • the starting symbol of PSSCH for example, the starting symbol of SL-PRS can be located at the beginning of PSSCH only when the starting symbol of PSSCH is different from the starting symbol of PSCCH, that is, when the starting symbol of PSSCH is not equal to 2 symbol;
  • the starting symbol of PSCCH is the same as the starting symbol of PSSCH, that is, the starting symbol of PSSCH is 2, then the starting symbol of SL-PRS is located at the starting symbol of PSSCH + N1'; it can also be understood as, the starting symbol of SL-PRS The starting symbol is located at the last symbol position of PSCCH +N1;
  • the starting symbol of PSCCH is different from the starting symbol of PSSCH, that is, the starting symbol of PSSCH is 4 or 5, then the starting symbol of SL-PRS is located at PSSCH starting symbol + N1"; it can also be understood as, SL -The starting symbol of PRS is located at the last symbol position of PSCCH +N1; among them, the value of N1' is different from the value of N1′′.
  • the N2th symbol of the PSSCH resource optionally, the value of N2 can be determined according to the symbol length of the PSSCH, for example, for the symbol length of the PSSCH ⁇ 6, 7, 8, 9, 10, 11, 12, 13 ⁇ , the values of N2 may not be exactly the same, or exactly the same, or completely different;
  • N3th symbol after the last symbol of PSCCH optionally, the specific value of N3 is determined according to whether the last symbol of PSCCH is symbol 3 or symbol 4, which can be different;
  • N4 is equal to 1.
  • the DMRS symbol position may be the last symbol position or the middle symbol position. For example, in the case of two DMRS symbols, the DMRS symbol position is the corresponding last symbol position; for another example, in the case of more than two DMRS symbols, the DMRS symbol position is the corresponding second DMRS symbol position;
  • the N5th symbol before the symbol position of the last DMRS can also be understood as the symbol position of SL-PRS occupies the N5 symbols before the symbol position of the last DMRS; for example, in the case of more than 2 DMRS symbols , cancel the transmission of the last DMRS symbol, then the symbol position of SL-PRS is ⁇ DMRS Ending position -N5 ⁇ DMRS Ending position ⁇ ; for another example, if there are more than 2 DMRS symbols, the last DMRS symbol is not occupied for transmission, then The symbol positions of SL-PRS are ⁇ DMRS Ending position -N5 ⁇ DMRS Ending position -1 ⁇ .
  • SL-PRS in the case where the symbol position or the starting symbol position of the SL-PRS determined by the first terminal according to any one of 1)-6) above overlaps with the DMRS symbol position, Then SL-PRS is transmitted on the symbols after DMRS. In one case, the starting symbol of SL-PRS is transmitted on the first symbol after DMRS.
  • the starting symbol of the scheduled PSSCH resource occupied by the SL-PRS is: 5
  • an optional symbol related to the mode of DMRS and the number of symbols occupied by the PSSCH is: 5
  • the symbol position of the SL-PRS related to the DMRS pattern is at least one of the following: one:
  • the optional SL-PRS symbol position is at least one of the following or at least N (N is the symbol length of SL-PRS): ⁇ 4,6,7,8,9 ⁇ ;
  • the optional SL-PRS symbol position is at least one of the following or at least N (N is the symbol length of SL-PRS): ⁇ [3],4,6,7,8 ,9 ⁇ ;
  • the optional SL-PRS symbol position is at least one of the following or at least N (N is the symbol length of SL-PRS):
  • ⁇ 4,5,6,7,9,10,11,12 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 3,8 ⁇ ;
  • ⁇ 5,6,8,9,10,11,12 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 4,8 ⁇ ;
  • ⁇ 5,6,7,9,10,11,12 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 1,4,7 ⁇ ;
  • the optional SL-PRS symbol position is at least one of the following or at least N (N is the symbol length of SL-PRS):
  • ⁇ 4,5,6,7,8,9,11,12 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 3,10 ⁇ ;
  • ⁇ 5,6,7,8,9,11,12 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 4,10 ⁇ ;
  • ⁇ 5,6,8,9,11,12 ⁇ , corresponding to DMRS is 4 symbols, symbol position ⁇ 1,4,7,10 ⁇ ;
  • the optional SL-PRS symbol position is at least one of the following or at least N (N is the symbol length of SL-PRS):
  • ⁇ 4,5,6,7,8,9,11,12 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 3,10 ⁇ ;
  • ⁇ 4,5,7,8,9,10,12 ⁇ , corresponding to DMRS is 3 symbols, symbol position ⁇ 1,6,11 ⁇ ;
  • ⁇ 3,5,6,8,9,11,12 ⁇ , corresponding to DMRS is 4 symbols, symbol position ⁇ 1,4,7,10 ⁇ ;
  • ⁇ 5,6,8,9,11,12 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 4, 10 ⁇ .
  • the starting symbol position of the SL-PRS related to the DMRS pattern is at least one of the following: ⁇ 4, 5, 6, 7, 8, 9, 10, 11 ⁇ ; further, The starting symbol position of the above SL-PRS is related according to the following information:
  • ⁇ 4,9 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 3,8 ⁇ ;
  • ⁇ 5,9 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 4,8 ⁇ ;
  • ⁇ 5,9 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 1,4,7 ⁇ ;
  • ⁇ 4,11 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 3,10 ⁇ ;
  • ⁇ 511 ⁇ corresponding to DMRS is 2 symbols, symbol position ⁇ 4,10 ⁇ ;
  • ⁇ 610 ⁇ corresponding to DMRS is 3 symbols, symbol position ⁇ 1,5,9 ⁇ ;
  • ⁇ 511 ⁇ corresponding to DMRS is 4 symbols, symbol position ⁇ 1,4,7,10 ⁇ ;
  • ⁇ 4,11 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 3,10 ⁇ ;
  • ⁇ 4,7 ⁇ , corresponding to DMRS is 3 symbols, symbol position ⁇ 1,6,11 ⁇ ;
  • ⁇ 5,8 ⁇ , corresponding to DMRS is 4 symbols, symbol position ⁇ 1,4,7,10 ⁇ ;
  • ⁇ 5,8,11 ⁇ , corresponding to DMRS is 2 symbols, symbol position ⁇ 4, 10 ⁇ .
  • the symbol length of the scheduled PSSCH resource occupied by the SL-PRS (for example, the symbol length is 2 or 4) is related to third information, and the third information includes at least one of the following:
  • the time slot in which the SL-PRS is located contains PSFCH resources; in one case, if PSFCH resources are included, the number of optional SL-PRS symbols is L3 (such as: 2); in another case, When PSFCH resources are not included, the number of optional SL-PRS symbols can be larger; therefore, the embodiment of the present application can define the number of symbols suitable for PSFCH or without PSFCH respectively;
  • the symbol length associated with the DMRS pattern is at least one of the following:
  • PSSCH ⁇ S1 (such as ⁇ 8,9 ⁇ ) symbols
  • the number of optional SL-PRS symbols is: ⁇ 2,4 ⁇
  • the number of optional SL-PRS symbols is: ⁇ 2,4 ⁇ .
  • Figures 9 and 10 are partial examples where the number of symbols of the SL-PRS is 4.
  • the graphics can be extended in combination with the optional symbol positions of the SL-PRS in the above embodiment and applied to any symbol. Location situation.
  • Figures 11 to 16 are partial examples where the number of symbols of the SL-PRS is 2.
  • the graphics can be extended in combination with the optional symbol positions of the SL-PRS in the above embodiment and applied to any symbol. Location situation.
  • the method further includes:
  • the second terminal determines the SL-PRS mode based on the corresponding relationship between the DMRS mode and the SL-PRS mode;
  • the second terminal determines the SL-PRS mode according to the DMRS mode or fourth information of the PSSCH;
  • the second terminal determines the SL-PRS mode based on the corresponding relationship between the DMRS mode and the SL-PRS mode and the DMRS mode of the PSSCH;
  • the fourth information includes at least one of the following:
  • the symbol length of PSSCH is ⁇ 6,7,8,9,10,11,12,13 ⁇ ;
  • Whether the time slot in which the SL-PRS is located includes PSFCH resources.
  • one or more DMRS patterns are associated with SL-PRS, and the SL-PRS is determined according to the indicated DMRS pattern and the SL-PRS associated with the DMRS pattern.
  • one or more DMRS patterns are associated with SL-PRS, and the scheduling information or resource pool configuration information includes part of the SL-PRS information (ie, the fourth information), determine the SL- PRS.
  • the SL-PRS information includes at least one of the following: the number of symbols of the SL-PRS, the comb value, the SL-PRS mode and the starting symbol of the SL-PRS.
  • the SL-PRS information includes frequency domain information, such as at least one of the following: the bandwidth of the SL-PRS, the relationship between the SL-PRS and the PSSCH.
  • the method further includes:
  • the second terminal determines the SL-PRS mode based on whether the time slot in which the SL-PRS is located includes PSFCH resources and fifth information; wherein the fifth information includes at least one of the following:
  • the starting symbol of PSSCH is ⁇ 2,5 ⁇ ;
  • the symbol length of PSSCH is ⁇ 6,7,8,9,10,11,12,13 ⁇ ;
  • At least two SL-PRS predefined methods or patterns are included, that is, one type of SL-PRS with PSFCH resources, and another type of SL-PRS without PSFCH resources.
  • the comb value of the SL-PRS is related to sixth information, and the sixth information includes at least one of the following:
  • the comb value is equal to the number of symbols of the SL-PRS; in another case, the comb value is the common divisor of the number of symbols of the SL-PRS.
  • the SL-PRS is partial stagger.
  • whether the UE reporting capability supports partial stagger is the comb value is the common divisor of the number of symbols of the SL-PRS.
  • the TDM mode of SL-PRS and PSSCH includes any of the following:
  • Slot-level TDM e.g. indicating TDM by transmitting at least a slot for SL-PRS or a slot for PSSCH Way.
  • the first terminal determines whether to support symbol-level TDM or slot-level TDM according to signaling or capabilities.
  • the symbol position of the actually transmitted PSSCH is different from the symbol position of SL-PRS, that is, it can be understood as symbol-level TDM.
  • the PSSCH is located before the SL-PRS transmitted symbol, that is, the actual transmitted 2nd SCI and/or PSSCH is located before the SL-PRS transmission.
  • the first terminal determines the first mapping information based on the first information; including determining the first mapping information based on the scheduling indication information and the preconfigured first information. For example, the first terminal determines the bandwidth and time slot position of the SL-PRS according to the SCI, and determines the SL-PRS mode or SL-PRS symbol information according to the preconfigured first information, thereby determining the specific mapping of SL-PRS to PSSCH. .
  • the first terminal determines the first mapping information only based on the scheduling indication information. For example, the first terminal determines the bandwidth, time slot position, SL-PRS mode or SL-PRS symbol information of the SL-PRS according to the SCI, thereby determining the specific mapping of the SL-PRS to the PSSCH.
  • the first terminal maps the SL-PRS to the scheduled PSSCH resource for transmission according to the determined first mapping information, and the corresponding second terminal measures the SL-PRS according to the first mapping information, that is, It can meet the resource requirements of positioning and avoid the interference of positioning on data signals.
  • the execution subject may be a PRS transmission device.
  • the PRS transmission device performing the PRS transmission method is used as an example to illustrate the PRS transmission device provided by the embodiment of the present application.
  • this embodiment of the present application also provides a positioning reference signal PRS transmission device 1600, which includes:
  • the sending module 1601 is configured to map the side link SL-PRS to the physical side link shared channel PSSCH resource according to the first mapping information and send it; wherein the first mapping information includes at least one of the following:
  • SL-PRS occupies the symbol information of PSSCH resources
  • Time division multiplexing TDM method of SL-PRS and PSSCH is a method of SL-PRS and PSSCH.
  • the device further includes:
  • a first determination module configured to determine whether to transmit the SL-PRS on PSSCH resources according to a first manner; wherein the first manner includes at least one of the following:
  • the resource pool configuration information is determined by network configuration or network indication or terminal configuration or terminal indication or high-level indication.
  • the device further includes:
  • a second determination module configured to determine the first mapping information according to the first rule and/or first information; wherein the first information includes at least one of the following:
  • the first rule is indicated by scheduling instruction information for scheduling PSSCH or resource pool configuration information, or the first rule is a predefined SL-PRS mapping rule.
  • the relationship between the bandwidth of the SL-PRS and the bandwidth of the scheduled PSSCH resources includes:
  • the bandwidth of SL-PRS is the same as the bandwidth of PSSCH resources;
  • the bandwidth of SL-PRS is different from the bandwidth of PSSCH resources.
  • the scheduling indication information or the resource pool configuration information is also used to Indicate at least one of the following:
  • Offset information of the starting frequency domain position of the SL-PRS relative to the starting frequency domain position of the PSSCH resource is offset.
  • the scheduling indication information or the resource pool configuration information is also used. Indicate at least one of the following:
  • the SL-PRS occupies the bandwidth allocation information of PSSCH resources
  • the bandwidth of the SL-PRS changes relative to the bandwidth of the PSSCH resource.
  • the device further includes:
  • a matching or puncturing module used for rate matching or puncturing the SL data channel or SL signal on the PSSCH resource.
  • the device further includes:
  • the third determination module is used to determine the gap between the SL-PRS and the SL channel based on predefinition or network configuration or terminal configuration.
  • the symbol information of the scheduled PSSCH resources occupied by the SL-PRS includes at least one of the following:
  • the SL-PRS occupies at least one of the symbol position, symbol number and starting symbol of the scheduled PSSCH resource;
  • a mode of SL-PRS is used to indicate at least two of the symbol number, symbol position, starting symbol, and comb value of the SL-PRS of the PSSCH resource occupied by the SL-PRS.
  • the SL-PRS occupies at least one of the symbol position, symbol number, starting symbol and comb value of the SL-PRS of the PSSCH resource, which is related to the second information; wherein, the The second information includes at least one of the following:
  • Whether the time slot in which the SL-PRS is located contains physical side link feedback channel PSFCH resources.
  • the symbol position occupied by the SL-PRS in the PSSCH resource includes at least one of the following:
  • SL-PRS occupies the starting symbol of the scheduled PSSCH resource
  • SL-PRS occupies the symbol length of scheduled PSSCH resources.
  • the starting symbol of the scheduled PSSCH resource occupied by the SL-PRS is any one of the following:
  • the value of N1 is related to the following information:
  • the symbol length of the PSSCH resource occupied by the SL-PRS is related to third information, and the third information includes at least one of the following:
  • the time slot in which the SL-PRS is located contains PSFCH resources
  • the device further includes:
  • the fourth determination module is used to determine the SL-PRS mode based on the correspondence between the DMRS mode and the SL-PRS mode;
  • the fourth information includes at least one of the following:
  • Whether the time slot in which the SL-PRS is located includes PSFCH resources.
  • the device further includes:
  • the fifth determination module is used to determine the mode of SL-PRS according to whether the time slot in which the SL-PRS is located includes PSFCH resources and fifth information; wherein the fifth information includes at least one of the following:
  • the comb value of the SL-PRS is related to sixth information, and the sixth information includes at least one of the following:
  • the TDM mode of the PSSCH of the SL-PRS includes any of the following:
  • the configuration granularity of the resource pool configuration information includes at least one of the following:
  • Each channel occupancy rate CR Each channel occupancy rate CR.
  • the first terminal maps the SL-PRS to the scheduled PSSCH resource for transmission according to the determined first mapping information, and the corresponding second terminal measures the SL-PRS according to the first mapping information, which can satisfy the positioning requirements.
  • the demand for resources can also avoid positioning interference on data signals.
  • the PRS transmission device provided by the embodiment of the present application is a transmission device capable of executing the above-mentioned PRS transmission method, then all the embodiments of the above-mentioned PRS transmission method are applicable to this device, and can achieve the same or similar beneficial effects.
  • this embodiment of the present application also provides a positioning reference signal PRS transmission device 1700, which includes:
  • the measurement module 1701 is configured to measure the side link SL-PRS according to the first mapping information; wherein the first mapping information is used to indicate the mapping rule of SL-PRS to PSSCH resources; the first mapping information includes the following At least one:
  • SL-PRS occupies the symbol information of PSSCH resources
  • Time division multiplexing TDM method of SL-PRS and PSSCH is a method of SL-PRS and PSSCH.
  • the measurement module includes:
  • a first measurement submodule configured to measure the SL-PRS according to the first mapping information and the scheduling indication information used to schedule PSSCH;
  • the second measurement submodule is configured to measure the SL-PRS according to the first mapping information and the preconfiguration information of the SL-PRS.
  • the device further includes:
  • a tenth determination module configured to determine whether to transmit the SL-PRS on PSSCH resources according to a first manner; wherein the first manner includes at least one of the following:
  • the resource pool configuration information is determined by network configuration or network indication or terminal configuration or terminal indication or high-level indication.
  • the device further includes:
  • An eleventh determination module configured to determine the first mapping information according to the first rule and/or first information; wherein the first information includes at least one of the following:
  • the first rule is indicated by scheduling instruction information for scheduling PSSCH or resource pool configuration information, or the first rule is a predefined SL-PRS mapping rule.
  • the relationship between the bandwidth of the SL-PRS and the bandwidth of the PSSCH resource includes:
  • the bandwidth of SL-PRS is the same as the bandwidth of PSSCH resources;
  • the bandwidth of SL-PRS is different from the bandwidth of PSSCH resources.
  • the scheduling indication information or the resource pool configuration information is also used to Indicate at least one of the following:
  • Offset information of the starting frequency domain position of the SL-PRS relative to the starting frequency domain position of the PSSCH resource is offset.
  • the scheduling indication information or the resource pool configuration information is also used. Indicate at least one of the following:
  • the SL-PRS occupies the bandwidth allocation information of PSSCH resources
  • the bandwidth of the SL-PRS changes relative to the bandwidth of the PSSCH resource.
  • the symbol information of the PSSCH resources occupied by the SL-PRS includes at least one of the following:
  • a mode of SL-PRS is used to indicate at least two of the symbol number, symbol position, starting symbol, and comb value of the SL-PRS of the PSSCH resource occupied by the SL-PRS.
  • the SL-PRS occupies at least one of the symbol position, symbol number, starting symbol and comb value of the SL-PRS of the PSSCH resource, which is related to the second information; wherein, the The second information includes at least one of the following:
  • Whether the time slot in which the SL-PRS is located contains physical side link feedback channel PSFCH resources.
  • the starting symbol occupied by the SL-PRS in the PSSCH resource is any one of the following:
  • the value of N1 is related to the following information:
  • the symbol length of the PSSCH resource occupied by the SL-PRS is related to third information, and the third information includes at least one of the following:
  • the time slot in which the SL-PRS is located contains PSFCH resources
  • the device further includes:
  • the twelfth determination module is used to determine the SL-PRS mode based on the correspondence between the DMRS mode and the SL-PRS mode;
  • the fourth information includes at least one of the following:
  • Whether the time slot in which the SL-PRS is located includes PSFCH resources.
  • the device further includes:
  • a thirteenth determination module configured to determine the mode of SL-PRS based on whether the time slot in which the SL-PRS is located includes PSFCH resources and fifth information; wherein the fifth information includes at least one of the following:
  • the comb value of the SL-PRS is related to sixth information, and the sixth information includes at least one of the following:
  • the TDM mode of the PSSCH of the SL-PRS includes any of the following:
  • the configuration granularity of the resource pool configuration information includes at least one of the following:
  • Each channel occupancy rate CR Each channel occupancy rate CR.
  • the first terminal maps the SL-PRS to the scheduled PSSCH resource for transmission according to the determined first mapping information, and the corresponding second terminal measures the SL-PRS according to the first mapping information, which can satisfy the positioning requirements.
  • the demand for resources can also avoid positioning interference on data signals.
  • the PRS transmission device provided by the embodiment of the present application is a transmission device capable of executing the above-mentioned PRS transmission method. Then all embodiments of the above-mentioned PRS transmission method are applicable to this device, and can achieve the same or similar performance. beneficial effects.
  • the PRS transmission device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip.
  • the electronic device may be a terminal or other devices other than the terminal.
  • terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.
  • the PRS transmission device provided by the embodiment of the present application can implement each process implemented by the method embodiments in Figures 1 to 20 and achieve the same technical effect. To avoid duplication, the details will not be described here.
  • this embodiment of the present application also provides a terminal 1800, which includes a processor 1801 and a memory 1802.
  • the memory 1802 stores programs or instructions that can be run on the processor 1801.
  • An embodiment of the present application also provides a terminal, including a processor and a communication interface, wherein the processor is configured to map the side link SL-PRS to the physical side link shared channel PSSCH resource according to the first mapping information and send ;
  • the first mapping information includes at least one of the following: the relationship between the bandwidth of the SL-PRS and the bandwidth of the PSSCH resource; the symbol information of the PSSCH resource occupied by the SL-PRS; the time division multiplexing TDM mode of the SL-PRS and the PSSCH.
  • an embodiment of the present application provides a terminal, including a processor and a communication interface, wherein the processor is configured to measure the side link SL-PRS according to the first mapping information; wherein the first mapping information is used to indicate Mapping rules for mapping SL-PRS to PSSCH resources; the first mapping information includes at least one of the following: the relationship between the bandwidth of SL-PRS and the bandwidth of PSSCH resources; symbol information that SL-PRS occupies PSSCH resources; SL-PRS and PSSCH time division multiplexing TDM method.
  • This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment.
  • Each implementation process and implementation of the above-mentioned method embodiment are All existing methods can be applied to this terminal embodiment and can achieve the same technical effect.
  • FIG. 24 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.
  • the terminal 1900 includes but is not limited to: a radio frequency unit 1901, a network module 1902, an audio output unit 1903, an input unit 1904, a sensor 1905, a display unit 1906, a user input unit 1907, an interface unit 1908, a memory 1909, a processor 1910, etc. At least some parts.
  • the terminal 1900 may also include a power supply (such as a battery) that supplies power to various components.
  • the power supply may be logically connected to the processor 1910 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions.
  • the terminal structure shown in Figure 24 does not constitute a limitation on the terminal.
  • the terminal may include more or fewer components than shown in the figure, or some components may be combined or arranged differently, which will not be described again here.
  • the input unit 1904 may include a graphics processing unit (Graphics Processing Unit, GPU) 19041 and a microphone 19042.
  • the graphics processor 19041 is responsible for the image capture device (GPU) in the video capture mode or the image capture mode. Process the image data of still pictures or videos obtained by cameras (such as cameras).
  • the display unit 1906 may include a display panel 19061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 1907 includes a touch panel 19071 and at least one of other input devices 19072 .
  • Touch panel 19071 also known as touch screen.
  • the touch panel 19071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 19072 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.
  • the radio frequency unit 1901 after receiving downlink data from the network side device, the radio frequency unit 1901 can transmit it to the processor 1910 for processing; in addition, the radio frequency unit 1901 can send uplink data to the network side device.
  • the radio frequency unit 1901 includes, but is not limited to, an antenna, amplifier, transceiver, coupler, low noise amplifier, duplexer, etc.
  • Memory 1909 may be used to store software programs or instructions as well as various data.
  • the memory 1909 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc.
  • memory 1909 may include volatile memory or nonvolatile memory, or memory 1909 may include both volatile and nonvolatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM) , SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM).
  • RAM Random Access Memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM Double Data Rate SDRAM
  • DDRSDRAM double data rate synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM enhanced synchronous dynamic random access memory
  • Synch link DRAM synchronous link dynamic random access memory
  • SLDRAM direct memory bus
  • the processor 1910 may include one or more processing units; optionally, the processor 1910 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above modem processor may not be integrated into the processor 1910.
  • the processor 1910 is used to map the side link SL-PRS to the scheduled physical side link shared channel PSSCH resource according to the first mapping information, and the radio frequency unit 1901 is used to send the mapped SL-PRS and PSSCH; wherein the first mapping information includes at least one of the following:
  • SL-PRS occupies the symbol information of the scheduled PSSCH resources
  • Time division multiplexing TDM method of SL-PRS and PSSCH is a method of SL-PRS and PSSCH.
  • the processor 1910 is configured to measure the side link SL-PRS according to the first mapping information; wherein the first mapping information is used to indicate the mapping rule of SL-PRS to PSSCH resources; the first mapping information include at least one of the following:
  • SL-PRS occupies the symbol information of PSSCH resources
  • Time division multiplexing TDM method of SL-PRS and PSSCH is a method of SL-PRS and PSSCH.
  • the first terminal maps the SL-PRS to the scheduled PSSCH resource for transmission according to the determined first mapping information, and the corresponding second terminal measures the SL-PRS according to the first mapping information, which can satisfy the positioning requirements.
  • the demand for resources can also avoid positioning interference on data signals.
  • the terminal provided by the embodiments of the present application is a terminal capable of executing the above-mentioned PRS transmission method, then all embodiments of the above-mentioned PRS transmission method are applicable to the terminal, and can achieve the same or similar beneficial effects.
  • Embodiments of the present application also provide a readable storage medium.
  • the readable storage medium stores programs or instructions. When the program or instructions are executed by a processor, each process of the above-mentioned positioning reference signal PRS transmission method embodiment is implemented. And can achieve the same technical effect. To avoid repetition, they will not be described again here.
  • the processor is the processor in the terminal described in the above embodiment.
  • the readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.
  • An embodiment of the present application further provides a chip.
  • the chip includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to realize the transmission of the above positioning reference signal PRS.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Embodiments of the present application further provide a computer program/program product.
  • the computer program/program product is stored in a storage medium.
  • the computer program/program product is executed by at least one processor to implement the above positioning reference information.
  • Each process of the embodiment of the transmission method of No. PRS can achieve the same technical effect. To avoid duplication, it will not be described again here.
  • the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation.
  • the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to related technologies.
  • the computer software product is stored in a storage medium (such as ROM/RAM, disk, CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande, qui relève du domaine technique des communications, divulgue un procédé et un appareil de transmission de signal de référence de positionnement (PRS), et un terminal. Le procédé selon la présente demande comprend les étapes suivantes : un premier terminal mappe, selon des premières informations de mappage, un signal de référence de positionnement de liaison latérale (SL-PRS) à une ressource de canal physique partagé de liaison latérale (PSSCH), et l'envoie, les premières informations de mappage comprenant ce qui suit : la relation entre la largeur de bande du signal SL-PRS et la largeur de bande de la ressource PSSCH et/ou les informations de symbole du signal SL-PRS occupant la ressource PSSCH et/ou le mode de multiplexage par répartition dans le temps (TDM) du signal SL-PRS et du canal PSSCH.
PCT/CN2023/086588 2022-04-06 2023-04-06 Procédé et appareil de transmission de signal de référence de positionnement (prs), et terminal WO2023193762A1 (fr)

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CN202210360210.6A CN116938415A (zh) 2022-04-06 2022-04-06 定位参考信号prs的传输方法、装置及终端
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Citations (3)

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WO2019153129A1 (fr) * 2018-02-06 2019-08-15 Oppo广东移动通信有限公司 Dispositif utilisateur et procédé d'envoi et de réception d'un signal de positionnement entre des dispositifs utilisateurs
WO2020246842A1 (fr) * 2019-06-05 2020-12-10 엘지전자 주식회사 Positionnement de liaison latérale basé sur une transmission de prs d'un équipement utilisateur unique dans nr v2x
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WO2019153129A1 (fr) * 2018-02-06 2019-08-15 Oppo广东移动通信有限公司 Dispositif utilisateur et procédé d'envoi et de réception d'un signal de positionnement entre des dispositifs utilisateurs
WO2020246842A1 (fr) * 2019-06-05 2020-12-10 엘지전자 주식회사 Positionnement de liaison latérale basé sur une transmission de prs d'un équipement utilisateur unique dans nr v2x
CN114257355A (zh) * 2020-09-23 2022-03-29 展讯通信（上海）有限公司 直连通信下prs资源指示方法及装置、存储介质、终端

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